/*
 * Copyright 2022 Web3 Labs Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */
package org.web3j.service;

import org.web3j.crypto.RawTransaction;

/** Service to sign transaction. */
public interface TxSignService {

    /**
     * Sign raw transaction.
     *
     * @param rawTransaction Raw transaction
     * @param chainId Ethereum chain id, -1 is NONE
     * @return Transaction signature
     */
    byte[] sign(RawTransaction rawTransaction, long chainId);

    /**
     * Get key address of the current wallet
     *
     * @return Wallet address
     */
    String getAddress();
}
